Lol you keep saying 400 times higher c02. I’ve done multiple searches and it was never 400 times what it is now. It’s was around 7000 ppm for c02 during previous ice age Currently we’re around 400ppm so that would mean the c02 would have been 160,000ppm during the time you’re taking about. That wou...

we found later that removing all of the "unnecessary" CO2 in the atmosphere would have a limited effect as water vapor and other greenhouse gases would take a mere five years to reproduce the warmth cause by the CO2. CO2 and water vapor don't operate in the same way. The amount of water vapor the a...